Device for lowering or raising smoke-stacks.



No. 627,844. Patented June 27, I899.

J. u. BAILEY.

DEVICE FOR LOWEBING 0R RAISING SMOKE STAGKS.

(Application filed Feb. 24, 1899.)

(H0 Muriel.)

A TTORNEYS.

WITNESSES. I

" I UNITED I STATES PATENT OFFICE.

JOHN D. DAILEY, OF WHITE PLAINS, NE\V YORK.

DEVICE FOR LOWERIING OR RA-ISING SMOKE-STACKS.

SPECIFICATION forming part of Letters Patent N 0. 627,844, dated June 27, 1899. Application filed February 24, 1899. Serial No. 706,681. (No model.)

This invention relates to improvements in.

devices for operating smoke-stacks or masts for steam vessels. To permit of a steam vessel passing under a bridge or the like, it is often found necessary to lower the stack or mast or a portion thereof. This is generally a diificult operation, requiring considerable time and labor. I

The object of my invention, therefore, is to provide a simple means for lowering a smokestack or mast and means for automatically returning it to its normal position after passing under a bridge or the like.

I will describe a device for operating smokestacks or masts embodying my invention and thenv point out the novel features in the appended claims.

Reference is to be had to the accompanying drawings, forming a part of this specification, in which similar characters of reference'indicate corresponding parts in both figures.

Figure 1 is a partial side elevation and partial section on the line 1 1 of Fig. 2 of a device embodying my invention, and Fig. 2 is a section on the line 2 2 of Fig. 1.

Referring to the drawings, 1 designates a fixed portion of a smoke-stack, and 2 a swinging portion. The swinging portion 2 has a hinge connection-3 with the section 1, and,

' as here shown, the two sections have a lapjoint 4.

Mounted in bearing-blocks 5, arranged on the roof 6 of a vessel, is a rock-shaft 7, and

1 chains 12 extend downward into wells or cylinders 13, here shown as secured in the vessel. To the end of each chain 12 is secured a sliding block 14, and surrounding the chain between said block 14 and the fixedcover 15 of the well or cylinder is a spring 16.

On each end of the rock-shaft 7 is a lever 17, by which the device is to be operated to lower the section 2 of the smoke-stack. In operation when it is desired to lower the section 2 of the stack the rock-shaft 7 is to be operated by the'levers 17. This will cause the section 20f the stack to be moved substantially to the position indicated in dotted lines in Fig. 1, and at the same time the spring 16 will be compressed, so that after passing underneath a bridge and upon releasing the levers 17 the spring 16 by expanding will rock the shaft 7, and consequently by counterbalancing the stack will move the stack-section 2 toits normal or upright position, and any sudden jarof said section against the section 1 will be prevented by lugs 18, extended from the rock-shaft 7, engaging with lugs 19, extended from the inner bearing-blocks 5.

While I have shown the stack-section 2 as having two link connections with the rock- Having thus fully described my invention,

I claim as new and desire to secure by Letters Patent- 1. A smoke-stack or mast, comprising a fixed section, and a swinging section, a rockshaft having connection-with the swinging section, meansfor" operating the rock-shaft iandmeans for returning the swinging section to normal position, substantially as specified. 2. A smoke-stack or. mast, comprising a fixed section and a swinging section, a rockshaft, a connection between said rock-shaft and the swinging section, a lever extended sliaft, a well or cylinder, a spring in said well or cylinder, and a connection between the grooved wheel and the lower end of said spring, substantially as specified.

4. A smoke-stack for a vessel, comprising a fixed section and a swinging section, a rockshaft on the vessel, arms extending from said rock-shaft, link connections between said arms and the swinging section of the stack,

levers extended from the rock-shaft, groovedwheels on said rock-shaft, cylinders arranged in the vessel, springs arranged in said cylinders, chain connections between the grooved wheels, and blocks engaging with the lower ends of the springs, substantially as specified.

5. A smoke-stack, comprising a fixed section and a swinging section, a rock-shaft, arms extended from said rock-shaft, link connections between said arms and the swinging section of the stack, levers extended from said rock-shaft, springs having connection with the rock-shaft to automatically return the swinging section of the stack to its normal position, and means for limiting the movement caused by said springs, substantially as specified. I

JOHN D. DAILEY.

WVitnesses:

THOMAS OBRIEN, GHAs. E. HATTHEWs. 

